11213303031 has 18 divisors (see below), whose sum is σ = 18841401072. Its totient is φ = 6407601480.

The previous prime is 11213303021. The next prime is 11213303039. The reversal of 11213303031 is 13030331211.

It is a happy number.

11213303031 is a `hidden beast` number, since 11 + 21 + 330 + 303 + 1 = 666.

It is not a de Polignac number, because 11213303031 - 2²² = 11209108727 is a prime.

It is a super-2 number, since 2×11213303031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11213302995 and 11213303013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213303039) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12713055 + ... + 12713936.

It is an arithmetic number, because the mean of its divisors is an integer number (1046744504).

Almost surely, 2^11213303031 is an apocalyptic number.

11213303031 is a deficient number, since it is larger than the sum of its proper divisors (7628098041).

11213303031 is a wasteful number, since it uses less digits than its factorization.

11213303031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25427011 (or 25427001 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 11213303031 its reverse (13030331211), we get a palindrome (24243634242).

The spelling of 11213303031 in words is "eleven billion, two hundred thirteen million, three hundred three thousand, thirty-one".